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Multiple combination optimization overhead transmission line operation risk informatization assessment method

An overhead transmission line, combined optimization technology, applied in information technology support systems, instruments, data processing applications, etc., can solve the problem that the safety of line operation cannot be guaranteed, the complexity and randomness of transmission system operation are ignored, and the line is not considered comprehensively. security issues

Active Publication Date: 2014-05-14
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID +1
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Problems solved by technology

The deterministic method is mature and widely used, with a large safety margin and high reliability, but it ignores the complexity and randomness of the transmission system operation, and lacks quantitative analysis of risks, which will lead to too large a safety margin and cannot be guaranteed Safety of line operation
The uncertainty method takes into account the randomness of each risk accident in the operation of the transmission system and the probability of occurrence, and realizes the evaluation of the safety of the whole system through comprehensive analysis of all accidents, but the probabilistic analysis method only considers the randomness of line faults. and uncertainty, without considering the degree of consequences caused by line faults, so the safety status of the line is not considered comprehensively

Method used

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  • Multiple combination optimization overhead transmission line operation risk informatization assessment method
  • Multiple combination optimization overhead transmission line operation risk informatization assessment method
  • Multiple combination optimization overhead transmission line operation risk informatization assessment method

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Embodiment

[0065] In this embodiment, a multi-combination optimized overhead transmission line operation risk informatization evaluation method, see figure 1 A schematic block diagram of its evaluation process is shown, which specifically includes the following three stages:

[0066] Risk identification stage: specifically includes two parts: data collection and preprocessing, and the establishment of a risk assessment index system; this stage is also the input level of risk assessment;

[0067] Risk weight determination stage: specifically includes three parts: risk probability estimation, risk consequence quantification, and risk value determination; finally, the risk value is calculated according to the above risk value formula;

[0068] Risk determination stage: specifically includes risk level classification, risk classification, and risk result output.

[0069] in:

[0070] 1. Risk identification stage

[0071] 1. Data collection and preprocessing, obtain relevant data on the op...

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Abstract

The invention discloses a multiple combination optimization overhead transmission line operation risk informatization assessment method which comprises the steps that 1. risk identification is carried out, wherein by data collecting, a fault source is found, a risk accident set is generated, an uncertain risk factor set is analyzed in a statistic mode, and a risk evaluation index system is established; 2. an integrated risk value is determined, a transmission line operation risk assessment model is established, information entropy and an analytic hierarchy process are fused, risk probability, consequences generated by risks and risk weight are considered in a comprehensive mode, risk consequence severity is quantized through a mutual information value, and a transmission line operation integrated risk value is computed in a layer-by-layer-reasoning mode and a multiple-combination mode; and 3. risk determining is carried out, risk grades are divided, analyzing is carried out on the integrated risk weight, the risk grades are determined, and the results of risk assessment are output. According to the method, the overhead transmission line operation risk is assessed in a comprehensive mode and a multilevel mode, and the accuracy of transmission line operation risk assessment and the reliability of transmission line operation are improved.

Description

technical field [0001] The invention relates to a power system operation safety technology, in particular to an information-based evaluation method for the operation risk of an overhead power transmission line optimized by multiple combinations. Background technique [0002] The risk assessment of power system operation safety reflects the process of deepening people's understanding of power system stability and safe operation. Overhead transmission lines are responsible for the main transmission mode of power construction. With the continuous increase in the scale of power grid construction, the safety and stability of transmission line operations have gradually become prominent, and the impact on the power system is also increasing. Faced with this In order to ensure the healthy and stable operation of the line and improve the safety and reliability of the power grid operation, the risk assessment of the operation of overhead transmission lines came into being. At present...

Claims

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Application Information

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IPC IPC(8): G06Q50/06G06Q10/06
CPCY02E40/70Y04S10/50
Inventor 钱海王奇张晗宋云海常安邓军李晋伟林冰垠梁燕丽
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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